Packing-ring.



PACKING RING, Armonron rmm goma. 1912.

Patented Got. 7, 1913.

wlmfssfsi esi FATE@ FlllllQl.

ALBERT W. WENZEIQ'OF NEWARK, l:NEVI JERSEY, ASSIGNOR TO AMERICAN PISTON i RING COMPANY, A CORPORATION GF NEW JERSEY.

PAeKINGsnrNG.

Specification' of Letters Patent.

Patented @et 7, i913..

Application tiled ctober 30, 1912. Serial No. 728,589.

To all whom i may concern:

Be it known that l, ALBERT W. WENZEL, a subject of. Hungary, residing at Newark, in the county of -Essex and State of New Jersey, have yinvented certain improvements in PackingRings, of which the following is a specification.

The objects of this invent-ion 'are to provide a packing ring which shall have a uniform tension for 4its entire periphery; to produce such a tensionby hammering or distorting the material of which the ring is composed, and yet without weakening the ring or rendering it liable to breakage; to enable the ring 'to be readily and cheaply manufactured with great accuracy, and to i obtain other advantages and results some of which may be hereinafter referred to.

in which like numerals of reference indicate the same parts throughout the several fig.

ures, Figure l is a view of a ring blank before cutting; Fig. 2 is a similar view of the blank after cutting; Fig. 3 isv a view of the ring after hammering; Fig. 4 is a view on larger scale of 'one half of the ring from inside, and Fig.' 5 is a further enlarged cross-section on line A-A of Fig. 4.

In said drawings, 1 indicates a plain circular ring of any suitable material, preferably metal, which is of substantially uniform crosssection at all points. i This ring is cut, or parted, as at 2, in'Fig. 2, in any suitable and Well-known manner, and then the metal or other material of which the ring is composed `is distorted so as to open the ring, as shown in Fig. 3, and still keeping it in circular shape give it such a uniform tension that if its size is changed, it will remain circular and the tendenc to return to its normal size will be uni orm at all points of the ring. This tension may be secured by distorting the ring upon its outer side, to cause it topc'ontract, or by distorting the ring at its inner side to cause itto eX- i pand, and it isl this latter construction which dentations-4, each transverse yseries terminating short of the. edges of the surface of the rin bein treated, and the dents or indentatlons o each transverse series .being spaced from one another, as shown. This spacing insures that the` skin or surface of the metal is not broken' for any considerable distance, and thus the ring is not liable to crack or break in manufacture or use. The dents or indentations 4 may be of any form or depth or distance from one another, but I prefer to make them with a pointed too-l or punch, and place four of them acrossabout a quarter-inch surface, as shown in full size on Fig. 4. More or less than four could be used, however. l

The transverse series of dents r indentations 4 preferably extend each across the ring at right angles, as shown, and in straight lines, but obviously they could be otherwise arranged, ifi desired, in any manner suggesting itself to one skilled in the art- The dents or indentations 4 are preferablynll of substantially the same depth, or formed by blows of substantially equal intensity, in each transverse series, but obviously they may be varied as desired to the ring obtained by variously spacing the transverse series, as shown; that is to say, at that portion of the ring opposite its cut 2, the transverse series 3 are close together and from that portionl of the ring toward its ends they are placed farther and farther apart. Under some conditions, however, the transverse series 3 could be equally spaced and the dents or indentations 4 vary in depth or intensity of the blows forming them; that is to say, the dents or indentations would be deepest atthat, portion of the ring opposite its cut or split 2 and become less and less deep toward the ends of the ring. Or uniformit of tension 'might `be obtained, either partially or wholly, by

Having thus described the invention, what I claim is- 1. A packing ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents or indentations.

2. A packing ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents bor indentations, said transverse series being all substantially alike but differing in distance apart.

3. A packing `ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents or indentations,

said transverse series being closest together opposite the split of the .ring and getting farther apart in either direction.

4. A, packing ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents or indentations, the dents or indentations being all substantially alike but 'the transverse Series difering in distance apart.

5. A packing ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents or indentations, the dentsv or indentations of each 'transverse series being separated by unbroken portions of the said surface.

6. A packing ring consisting of a split ring of uniform cross-section having in a curved surface a circumferential series of transverse series of dents or indentations, the dents or'indentations of each transverse series being separated by unbroken portions of said surface and the ends of the series ALBERT W. WENZEL.

Witnesses:

HOWARD P. KING, JANET A. AYERS.. 

